Men, women, boys and girls have distinct security needs, which must be taken into account by security sector personnel in their work to ensure an inclusive security for all members of society. The security sector is broad and embraces institutions from the police, military and rule of law agencies, to policy-making institutions and non-statutory security actors such as the media or armed militias. Moreover, country-specific contexts reflect different needs and practices. Assessment, Monitoring and Evaluation help to strengthen and sustain security sector reform (SSR) efforts. Assessing the condition and context of security before implementing SSR initiatives, measuring the success of reform efforts, and monitoring the process of SSR demand a gender perspective in order to respond adequately to the diverse security needs of men, women, boys and girls.